Roboguru

Nilai dari

Nilai dari begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank sin end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 75 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank degree end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank minus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank sin end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 15 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank degree end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank plus end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank cos end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank space end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank 45 end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank degree end table table attributes columnalign right center left columnspacing 0px end attributes row blank equals blank end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank. end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank. end table table attributes columnalign right center left columnspacing 0px end attributes row blank blank. end table end style  

  1. begin mathsize 14px style square root of 3 end style  

  2. begin mathsize 14px style square root of 2 end style 

  3. begin mathsize 14px style 1 half square root of 2 end style  

  4. begin mathsize 14px style 1 third square root of 2 end style 

  5. begin mathsize 14px style 1 end style 

Jawaban:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell sin space 75 degree minus sin space 15 degree plus cos space 45 degree end cell equals cell 2 cos open parentheses fraction numerator 75 degree plus 15 degree over denominator 2 end fraction close parentheses sin open parentheses fraction numerator 75 degree minus 15 degree over denominator 2 end fraction close parentheses plus cos 45 degree end cell row blank equals cell 2 cos space 45 degree space sin space 30 degree plus cos space 45 degree end cell row blank equals cell 2 times 1 half square root of 2 times 1 half plus 1 half square root of 2 end cell row blank equals cell 1 half square root of 2 plus 1 half square root of 2 end cell row blank equals cell square root of 2 end cell end table end style

Jadi, jawaban yang tepat adalah B.

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